Floyd Mayweather Jr. of the U.S. answers questions during a news conference following his fight against Victor Ortiz, also of the U.S., at the MGM Grand Garden Arena in Las Vegas, Nevada September 17, 2011. Mayweather Jr took the WBC welterweight title from Ortiz with a controversial fourth-round knockout on Saturday that prompted an angry response from the crowd and raised questions about his conduct in the ring.

Nelly, the rapper who was born Cornell Iral Haynes, Jr., is speaking out about professional boxer Floyd Mayweather Jr after rumors swirled about a relationship with the latter's ex-fiance.

Shantel Jackson, the aspiring actress and model who was previously engaged to Mayweather, became the subject of controversy after she was spotted at a recent playoff game with Nelly. The sighting may have sparked some emotions in Mayweather, who took to Instagram to let the world know that he broke up with Jackson because she aborted their twin babies.

While the comments sparked outrage on Twitter, Mayweather continued to make remarks about Jackson and her friend Nelly. He appeared on the V-103 radio show with Big Tigger to make some questionable comments about the rapper.

Mayweather insisted that an unnamed woman who is a friend of his dated Nelly and made some claims about him.

"She's like, 'He's on steroids. He's broke. He has no money,'" Mayweather said on the radio show. "She's like, 'He had to borrow a lot of money from Ashanti. Over half a million dollars from Ashanti. And I used to always say, basically, 'That's not my business.'"

While Mayweather insisted he has nothing negative to say about Nelly, he insinuated that the rapper has said negative things about him in the past

"I've seen him at my fights, supporting me even though he had said some negative things about me as far as, 'I've hung out with this girl that Floyd knew, I hung out with that girl Floyd know,'" Mayweather claimed on the radio show. "I'm not gonna do the same."

Nelly decided to take to Instagram and Twitter to tell his side of the story and insisted he was not friends with the boxer.

"Is this the CHAMP....," the rapper questioned of Mayweather. " ..... To easy.. !!! IT WAS JUST BASKETBALL GAME..!"

He went on to make light of the situation, while insisting that Mayweather was not telling the truth about him.

"I would like to take this time to apologize to all of the guys that I have been cool with their ex or child's mother, I truly did not know the strength of my powers," he wrote. "If I can make the champion of the world the day before his fight lose his mind and tell lies like this all over a basketball game!!!!! then it must be some regular guys on rooftops looking for me through scopes.... Sorry I have kids!!!"